92 lines
3.6 KiB
Python
92 lines
3.6 KiB
Python
# Copyright (c) Nordic Semiconductor ASA
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without modification,
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# are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form, except as embedded into a Nordic
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# Semiconductor ASA integrated circuit in a product or a software update for
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# such product, must reproduce the above copyright notice, this list of
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# conditions and the following disclaimer in the documentation and/or other
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# materials provided with the distribution.
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#
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# 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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# contributors may be used to endorse or promote products derived from this
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# software without specific prior written permission.
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#
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# 4. This software, with or without modification, must only be used with a
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# Nordic Semiconductor ASA integrated circuit.
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#
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# 5. Any software provided in binary form under this license must not be reverse
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# engineered, decompiled, modified and/or disassembled.
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#
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# THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import threading, logging
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class Notification:
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def __init__(self, key, msg=None):
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if type(key) is not str:
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raise TypeError("Invalid notification key: " + str(key))
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self.key = key
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self.msg = msg
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def __repr__(self):
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return "Notification (key: %s, msg: %s)" % (str(self.key), str(self.msg))
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class Notifier:
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def __init__(self, callbacks=[], **kwargs):
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self.callbacks = {}
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self.callbackLock = threading.RLock()
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for callback in callbacks:
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self.subscribe(*callback)
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def clearCallbacks(self):
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with self.callbackLock:
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self.callbacks.clear()
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def subscribe(self, key, callback):
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with self.callbackLock:
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if callback not in self.getCallbacks(key):
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self.getCallbacks(key).append(callback)
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def unSubscribe(self, key, callback):
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with self.callbackLock:
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if callback in self.getCallbacks(key):
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self.getCallbacks(key).remove(callback)
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def getCallbacks(self, key):
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with self.callbackLock:
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if key not in self.callbacks:
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self.callbacks[key] = []
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return self.callbacks[key]
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def notify(self, key=None, msg=None, notification=None):
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with self.callbackLock:
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if notification == None:
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notification = Notification(key, msg)
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for callback in self.getCallbacks(notification.key):
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callback(notification)
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for callback in self.getCallbacks("*"):
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callback(notification)
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def passOnNotification(self, notification):
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self.notify(notification=notification)
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